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methane explosions in coal mines

CDC - Mining Feature - Coal Mine Explosion Prevention -

2011-12-9  There are two main types of coalmine explosions: methane and coal dust. Methane explosions occur when a buildup of methane gas contacts a heat source and there is not enough air to dilute the gas level below its explosion point. Likewise, fine particles of coal

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Why Do Coal Mines Explode? Live Science

2010-4-6  Methane explosions occur in mines when a buildup of methane gas, a byproduct of coal, comes into contact with a heat source, and there is not enough air to dilute the gas

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Role of Air Leaks in Causes of Methane Explosions in Coal ...

2016-4-14  coal mines, leading to death of people. Most of the coal mines in Russia with the work in progress are gas-bearing (Plotnikov, 1992). Over 86% of coal mines are dangerous by the explosion of gas and coal dust, including more than 50% of coal mines, which are overcategorical in methane and prone to sudden outbursts (Paleev et al., 2011). In such ...

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Methane Explosions and Causes of Their Origin in Highly ...

2018-7-20  It is shown that the most probable cause of explosion origin is methane-and-air mixture inflammation and subsequent blasts initiated by coal self-ignition foci in the mined-out space. In this case, burning gas is brought to stoping face and adjacent mine workings by blast wave, which causes explosions of coal dust.

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New Suppression System of Methane Explosion in Coal Mines

In general, large-scale disasters in mines can be listed under main headings such as explosions (methane, coal dust, etc.), mine fires, collapse of roof and side walls, landslides, suffocating ...

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(PDF) The methane-air explosion hazard within coal mine gobs

发布日期: 1月 01, 2014

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Statistical analysis of methane explosions in Turkey’s ...

2020-7-14  Methane explosions are the major accidents that occur in underground coal mines that cause mass fatalities, and the negative consequences resulting from these are frequently encountered (Güyagüler 2002; Ergun 2007; Xian-gong et al. 2009; İphar 2010; Durşen and Yasun 2012; Chunli et al. 2014; Wang et al. 2014; Yin et al. 2017). According to previous studies, it is known that a significant majority of the causes of underground coal mine

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Handbook for Methane Control in Mining

2012-8-30  troublesome geologic features like faults. Additional coal chapters contain methane controls for shaft sinking and shaft filling, for surface highwall mines, and for coal storage silos. Major coal mine explosion disasters have always involved the combustion of coal dust, originally triggered by methane. Thus, a chapter is included on making coal dust inert so it cannot explode.

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Risk assessment of gas explosion in coal mines based on ...

2020-3-1  Methane has been regarded as one of the most deadly dangers in underground coal mining because of its explosion risk (Kong et al., 2018; Liang et al., 2019). According to statistics, 293 particularly serious accidents (leading to the death of over 30 people) occurred in Chinese coal mines from 1949 to 2016.

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ON EXPLOSIVE MINE GASES AND DUSTS - USGS

2011-4-21  On Friday, December 6, at about 10.30 in the morning, an explosion of unusual violence swept completely through both mines, pursuing its course throughout the numerous ramifications and bursting out of the two pit mouths, located 1£ miles apart, nearly simultaneously.

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232 Historical Perspective Methane Explosions in Coal Mines

2021-4-14  As coal mining developed in Europe during the 17th and 18th centuries, severe mine explosions became common. It was soon discovered that the origin of the explosions was the ignition of mixtures of flammable gas, or firedamp and air, which accumulated in the mines. Firedamp is essentially methane liberated from coal when pressure is released.

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Role of Air Leaks in Causes of Methane Explosions in Coal ...

2016-4-14  coal mines, leading to death of people. Most of the coal mines in Russia with the work in progress are gas-bearing (Plotnikov, 1992). Over 86% of coal mines are dangerous by the explosion of gas and coal dust, including more than 50% of coal mines, which are overcategorical in methane and prone to sudden outbursts (Paleev et al., 2011). In such ...

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Methane Explosion Mitigation in Coal Mines by Water Mist ...

Methane Explosion Mitigation in Coal Mines by Water Mist Nikoloz Chikhradze 1 , Edgar Mataradze 1 , Mikheil Chikhradze 1 , Ted Krauthammer 2 , Zulkhair Mansurov 3 and Erhan Alyiev 3 Published under licence by IOP Publishing Ltd

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(PDF) The methane-air explosion hazard within coal mine gobs

This paper analyzes the explosion hazard resulting from the formation of methane-air mixtures in the mined-out gobs of underground longwall coal mines. Evidence from numerous mine explosions ...

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Methane Explosions In Coal Mines

CDC - Mining Feature - Coal Mine Explosion Prevention - NIOSH. There are two main types of coalmine explosions: methane and coal dust. Methane explosions occur when a buildup of methane gas contacts a heat source and there is not ...

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Risk assessment of gas explosion in coal mines based on ...

2020-3-1  The hazards of methane explosions in coal mines are widely distributed. Uncertainty and burstiness of the cause, concealment of the gestation process, influencing factors are all complicated. The explosion disaster, which occurs in a short period of time, results from instantaneous coupling of methane, oxygen and fire under certain conditions.

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A risk assessment method to quantitatively investigate the ...

2017-4-1  1. Introduction. Methane has been considered as one of the most deadly hazards for underground coal mining due to its explosion risk to both the miners and environment (Mahdevari et al., 2014, Saleh and Cummings, 2011).A statistic study indicated that 18 out of 26 extra-large coal mine accidents during 1949–2009 in China were caused or partly caused by gas explosions (Wang et al.,

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Coal Mine Methane UNECE

2021-3-4  The Group of Experts on Coal Mine Methane (CMM) is a subsidiary body of the Committee on Sustainable Energy (CSE) that promotes the reduction of greenhouse gas emissions from coal mines. Its activities on recovery and use of methane reduce the risks of explosions in coal mines. The principal activity of the Group of Experts on CMM is ...

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Handbook for Methane Control in Mining

2012-8-30  equipment, primarily for U.S. coal mines. These coal mine chapters include continuous miners and longwalls, including bleeders. Coal seam degasification is covered extensively. Other coal mine chapters deal with methane emission forecasting and predicting the excess gas from troublesome geologic features like faults.

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ON EXPLOSIVE MINE GASES AND DUSTS - USGS

2011-4-21  rence in the coal and rock strata, and the conditions governing its outflow into the mines. The subject of relative danger from destruc­ tive explosions due to gas and coal dust in different mines belonging to different coal fields was to be one of the principal lines of inves­ tigation.

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The methane-air explosion hazard within coal mine gobs

2014-2-3  of underground longwall coal mines. Evidence from numerous mine explosions suggests that explosive methane zones can form within longwall gobs. Explosions and fires resulting from these methane accumulations have led to severe and fatal injuries to the miners, including the explosion of the Upper Big Branch Mine in West Virginia, where 29 ...

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Methane Explosion Mitigation in Coal Mines by Water Mist ...

2017-12-21  Methane Explosion Mitigation in Coal Mines by Water Mist Nikoloz Chikhradze 1 , Edgar Mataradze 1 , Mikheil Chikhradze 1 , Ted Krauthammer 2 , Zulkhair Mansurov 3 and Erhan Alyiev 3 Published under licence by IOP Publishing Ltd

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Problem Of Methane-Air Mixture Explosions In Working

2020-1-12  Problem Of Methane-Air Mixture Explosions In Working Faces Of Coal Mines At Mining Intensi-fication And Ways Of Its Solution Sergey Novoselov1*, Valeriy Popov2, Yuriy Filatov1, Hee Lee2, and Anatoliy Golik2 1International Academy of Ecology and Life Protection Sciences, 194021, 3 Institutsky per., Saint- Petersburg, Russia

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Role of Air Leaks in Causes of Methane Explosions in Coal ...

Role of Air Leaks in Causes of Methane Explosions in Coal Mines and Improving Calculation Methods Valeriy Vitalievich Smirniakov and Victoria Vladimirovna Smirniakova National Mineral Resources University "Mining University" Russian Federation, 199106, St. Petersburg, 21st line, 2.

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PROBLEMS OF METHANE EXPLOSION AND BLAST

2019-3-1  coal mine. The designing and development of effective explosion energy suppression system will significantly decrease the damage of infrastructure and fatal outcomes in coal mines. This paper focuses on technical solutions to be used in designing a protective system for minimizing the consequences of methane explosions in coal mines.

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Explosive levels of methane recorded at Grosvenor Mine in ...

2021-3-10  The Coal Mining Board of Inquiry has resumed hearings in Brisbane, with Resources Safety and Health Queensland Regional Inspector of Mines, Stephen Smith, giving evidence over two days.

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RISK ASSESSMENT BY FAULT TREE ANALYSIS OF

2016-3-7  coal mines, preparing a practicable risk assessment is the primary step to sustain a safe workplace environment. The main objective of this study is to specify the root causes of methane explosions in underground hard coal mines by performing quantitative risk assessment. Total of 67 methane explosions resulted in 815 fatalities

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Coal Mine Methane UNECE

2021-3-4  The Group of Experts on Coal Mine Methane (CMM) is a subsidiary body of the Committee on Sustainable Energy (CSE) that promotes the reduction of greenhouse gas emissions from coal mines. Its activities on recovery and use of methane reduce the risks of explosions in coal mines. The principal activity of the Group of Experts on CMM is ...

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Methane Emissions in Underground Coal Mine Closure

2020-11-30  mines currently closed, for which the results of the methane emissions into a goaf of i-th longwall and analysis of water inflow into mine workings are available. The research into the issues associated with closing hard coal mines aimed at developing a methodology of managing environmental risk occurring during and after a mine closure was

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ON EXPLOSIVE MINE GASES AND DUSTS - USGS

2011-4-21  rence in the coal and rock strata, and the conditions governing its outflow into the mines. The subject of relative danger from destruc­ tive explosions due to gas and coal dust in different mines belonging to different coal fields was to be one of the principal lines of inves­ tigation.

More